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Problem Outlook requires password to connect to exchange

Discussion in 'Software' started by nugget, Dec 3, 2009.

  1. nugget
    Honorary Member

    nugget Junior toady

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    Hi all, a little problem with my outlook clients (2007) connecting to Exchange (2007). At random times the client just decides that it will disconnect itself. After having done that the user is then required to input their password. Sometimes this works and sometimes it doesn't and it's very annoying.

    What I have tried is (in the email account settings)
    configured the proxy authentication settings for outlook anywhere to use ntlm authentication (on workstations and laptops). This seemed to fix it for some but not all.
    configured the logon network security (security tab) to use password authentication ntlm (on workstations and laptops). This seemed to fix it for some but not all.
    flushed the dns cache as suggested by some people on the net, worked for about 1 day.

    Other users (both laptops and workstations) still have their settings as default and have no problems at all. Some have the problems at random and then they go away after a few days without any changes being made and some even on the same day.

    Anybody with a clue as to what's going on or somewhere else to look?

    Thanks
     
    Last edited: Jan 18, 2010
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  2. Notes_Bloke

    Notes_Bloke Terabyte Poster

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    Hi mate,
    Is this any help?
    NB
     
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  3. nugget
    Honorary Member

    nugget Junior toady

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    Thanks for that mate. I checked it out and it is set to use windows integrated authentication. The domain wasn't selected so I configured it to point to the domain. We'll see if this makes any difference.
     
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  4. demarrer

    demarrer Byte Poster

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    Maybe its a network hardware problem- like a switch that's on the blink, or a network card on the server (firmware/driver upgrade needed) ?
     
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  5. Sparky
    Highly Decorated Member Award

    Sparky Zettabyte Poster Moderator

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    Do the users just lose connection to Exchange or everything?

    Few things to try:

    Recreate the Exchange Profile in Outlook
    If using cached mode delete the .ost file
     
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  6. nugget
    Honorary Member

    nugget Junior toady

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    Okay, just to update this.

    I have found the reason for this problem. It seems that the System Attendant service on the exchange server does not start automatically after a restart of the exchange server (and services). Start the service and all these problems go away. Now to find the cause of why the service does not start even when it's set to start automatically.
     
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  7. Boycie
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    Boycie Senior Beer Tester

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    Same problem with a client of ours on SBS208 and Exchange 07.

    Haven't got to the bottom of it yet.
     
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  8. nugget
    Honorary Member

    nugget Junior toady

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    Boyce, you should check out event 4001 on eventid.com.

    Maybe of some help on where to look.
     
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  9. nugget
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    nugget Junior toady

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    Okay, just another update to this one. It seems to have not gotten any better, if anything it's worse than before. Multiple users seem to have the problem and it seems to be spreading.

    One thought I have is could this be related to a CAL issue? As I understand it the whole system setup was done when there were about 15 -20 members in the company and there are now 36 (and tendency is to grow). I think there were 'enough' user CALs bought at the time but I don't know if they were installed.

    If so what effect would this have? If there were say 25 purchased and installed, would the first 25 to log on get access to the server and the rest get access when one of the 25 disconnect?

    At the last place I worked at we had the CALs on paper but didn't install them and we never had any problems like this.
     
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  10. madman045

    madman045 Kilobyte Poster Premium Member

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    What is the OS with Exchangr 2007, is it SBS or is it just Server with Exchange 2007?

    SBS 2008 is a trust based licencing system, SBS 2003 you had to install/activate CALs

    SBS 2003 / Server 2003/2008 etc.. once the CAL limit has been reached, it will start to prevent users accessing the system until a CAL had been released.
     
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  11. nugget
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    nugget Junior toady

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    The OS is Server 2003 R2 with Exchange 2007 standard edition.
     
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